20085080

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{331}}^1$

素因数の和:420

約数の個数: 64

約数和(自身を含む): 47688480

約数和(自身を除く): 27603400

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 41, 74, 82, 148, 164, 185, 205, 296, 328, 331, 370, 410, 662, 740, 820, 1324, 1480, 1517, 1640, 1655, 2648, 3034, 3310, 6068, 6620, 7585, 12136, 12247, 13240, 13571, 15170, 24494, 27142, 30340, 48988, 54284, 60680, 61235, 67855, 97976, 108568, 122470, 135710, 244940, 271420, 489880, 502127, 542840, 1004254, 2008508, 2510635, 4017016, 5021270, 10042540, 20085080]

約数ペア:

[(1, 20085080), (2, 10042540), (4, 5021270), (5, 4017016), (8, 2510635), (10, 2008508), (20, 1004254), (37, 542840), (40, 502127), (41, 489880), (74, 271420), (82, 244940), (148, 135710), (164, 122470), (185, 108568), (205, 97976), (296, 67855), (328, 61235), (331, 60680), (370, 54284), (410, 48988), (662, 30340), (740, 27142), (820, 24494), (1324, 15170), (1480, 13571), (1517, 13240), (1640, 12247), (1655, 12136), (2648, 7585), (3034, 6620), (3310, 6068)]